# -*- coding:utf-8 -*-
#Author LJ 
#Mail:admin@attacker.club
#Site:blog.attacker.club
#description
letters = ['a','b','z','d']
if 'z' in letters: #搜索列表是否包含这个元素
    print "z"
else:
    print "not found z"



print "查找源元素索引",letters.index('z')
""" 
for循环匹配元素
对象index查看元素指针
"""